“®ŽŒƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
understand =
1.
‚¤‚½‚¤
2.
”ƒ‚¤
‚©‚¤
3.
‚³‚
4.
‚í‚©‚é
ƒŒƒxƒ‹4.
•ÏX
SDAL“‡‰pŒêŠwZ